394160725512 has 96 divisors (see below), whose sum is σ = 1093922739000. Its totient is φ = 128139325440.

The previous prime is 394160725507. The next prime is 394160725537. The reversal of 394160725512 is 215527061493.

394160725512 is a `hidden beast` number, since 3 + 9 + 4 + 1 + 60 + 72 + 5 + 512 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 348225091236 + 45935634276 = 590106^2 + 214326^2 .

It is a super-2 number, since 2×394160725512² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9452164 + ... + 9493772.

Almost surely, 2^394160725512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394160725512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546961369500).

394160725512 is an abundant number, since it is smaller than the sum of its proper divisors (699762013488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394160725512 is a wasteful number, since it uses less digits than its factorization.

394160725512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44871 (or 44864 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 394160725512 in words is "three hundred ninety-four billion, one hundred sixty million, seven hundred twenty-five thousand, five hundred twelve".